Fertility Glossary

Liquid nitrogen

The extremely cold liquid used to store frozen eggs, sperm and embryos.

Samples are held at about minus 196°C. A reliable local supply of liquid nitrogen is essential for safe long-term storage, and worth asking about before you pay storage fees.

Related terms

Cryostorage tank

An insulated vessel holding frozen samples in liquid nitrogen.

Cryopreservation

Freezing and storing eggs, sperm or embryos.

Storage fee

The recurring charge for keeping frozen eggs, sperm or embryos.

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